Warning: Trying to access array offset on value of type null in D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php on line 15

Warning: Trying to access array offset on value of type null in D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php on line 16

Warning: Trying to access array offset on value of type null in D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php on line 17

Warning: Trying to access array offset on value of type null in D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php on line 18

Warning: Trying to access array offset on value of type null in D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php on line 19

Fatal error: Uncaught mysqli_sql_exception: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near ':choiceindex' at line 1 in D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php:22 Stack trace: #0 D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php(22): mysqli->prepare('UPDATE choice S...') #1 {main} thrown in D:\xampp\htdocs\exam\php\백업-동작하는것만\gpt_worker - 정상동작 - 복사본.php on line 22